Trigger switch and lock mechanism therefore

Details Trigger switch and lock mechanism therefore Trigger switch and lock mechanism therefore

1977-08-05

1978-06-27

Hart, Ro E.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200 44, 200164R, 200321, 200328, 310 50, H01H 906

Patent

active

040977030

ABSTRACT:
A trigger switch and lock mechanism therefore to be mounted in the handle of a drill housing for activating a motor of a drill wherein the trigger switch includes a speed control circuit carried on a circuit board. A trigger is slidably disposed in mounting brackets affixed on the circuit board. A locking member is slidably connected in one of the mounting brackets and is shiftable into contact with the trigger so as to lock the trigger in depressed position so that once the switch has been activated it will be locked in the "on" position at the selected speed setting. A spring is connected to the locking member to release the locking member from engagement with the trigger upon subsequent trigger depression to place the switch in the "off" position.
The locking member and trigger have correspondingly high friction contact surfaces.
The locking member may have a camming portion which coacts with the bracket to cause a wedge-lock action at the trigger contact surface which is releasable only upon subsequent trigger depression resulting in release of the locking member and deactivation switch upon the trigger load spring biasing the trigger to the "off" position.

REFERENCES:
patent: 2481499 (1949-09-01), Collura
patent: 2525839 (1950-10-01), Sparklin
patent: 3328613 (1967-06-01), Gawrow
patent: 3549844 (1970-12-01), Chambers
patent: 3588411 (1971-06-01), Milkey
patent: 3594523 (1971-07-01), Frenzel
patent: 3626118 (1971-12-01), Rotefuhr
patent: 3648142 (1972-03-01), Corey
patent: 3660742 (1972-05-01), Gawron
patent: 3703646 (1972-11-01), Jacyno
patent: 3869591 (1975-03-01), Piber

Affiliated with

Also associated with

Rating

Trigger switch and lock mechanism therefore does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Trigger switch and lock mechanism therefore, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Trigger switch and lock mechanism therefore will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2305924